Differences Between Fraunhofer and Fresnel Diffraction

S.No.	FRAUNHOFER DIFFRACTION	FRESNEL DIFFRACTION
1	Source and screen are placed at infinite distances from slit	Source and screen are placed at finite distances from slit
2	Wave front falling on the aperture is planar	Incident wave front is either spherical or cylindrical
3	The diffracted wave front is planar	The diffracted wave front is either spherical or cylindrical
4	Usually biconvex lenses are required to study diffraction at laboratory	No lenses are required
5	The maxima and minima are well defined	The maxima and minima are not well defined